RAR archive with BIOS firmware for the Dell OptiPlex 3040 desktop, whose motherboard carries the Wistron-style number 14056-2, so Wistron is the ODM. The name gives no version, so extract the archive and examine the image before use. Technicians flash such dumps to the SPI chip with a programmer when a board shows no POST or a corrupted BIOS. Save the original chip contents, keep the service tag and MAC data in mind, and ensure the image size matches the chip.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →